Bio250 Exam 2025 Questions with
Accurate Solutions
Draw a water molecule (include the charges and interactions)
water is a solvent (substance that does dissolving)
What is the study of metabolism
biochemistry
who founded the field of biochemsitry
Buchner
What is recombinant DNA technology?
Genetic engineering
What is gene therapy?
inserting a missing or replacing a defective gene in human cells
Describe nitrogen fixation and its importance.
Beijerinck discovered
Turning unusable N2 into usable form like NH3 by bacteria for plants to utilize
What person clarified the role of microbes in recycling sulfur?
Winogradsky
What is the smallest chemical unit of matter?
atom
What atomic particles orbit around the nucleus? How do these determine the amount
of covalent bonds
, Electrons orbit the nucleus
number of covalent bonds determined by number of valence electrons
Decomposition reactions ___________ (break or build) bonds in larger molecules to form
smaller
molecules.
break
Exchange reactions are when....
atoms are moved from one to another
What is the difference between cohesion and adhesion?
Cohesion- h2o molecules to stick to one another (water
drops) Adhesion- h2o molecules to stick to other molecules
(water and a solid surface)
Proteins are made by ______________________ monomers.
amino acids
Lipids are made by ___________________ monomers.
glycerol backbone, fatty acids
Carbohydrates are made from ________________ monomers.
monosaccharides
Nucleic acids are made from _________________ monomers.
nucleotides
Dehydration vs hydrolysis reactions
1) Dehydration reactions link monomers together into polymers by releasing water
2) Hydrolysis breaks polymers into monomers using a water molecule.
Accurate Solutions
Draw a water molecule (include the charges and interactions)
water is a solvent (substance that does dissolving)
What is the study of metabolism
biochemistry
who founded the field of biochemsitry
Buchner
What is recombinant DNA technology?
Genetic engineering
What is gene therapy?
inserting a missing or replacing a defective gene in human cells
Describe nitrogen fixation and its importance.
Beijerinck discovered
Turning unusable N2 into usable form like NH3 by bacteria for plants to utilize
What person clarified the role of microbes in recycling sulfur?
Winogradsky
What is the smallest chemical unit of matter?
atom
What atomic particles orbit around the nucleus? How do these determine the amount
of covalent bonds
, Electrons orbit the nucleus
number of covalent bonds determined by number of valence electrons
Decomposition reactions ___________ (break or build) bonds in larger molecules to form
smaller
molecules.
break
Exchange reactions are when....
atoms are moved from one to another
What is the difference between cohesion and adhesion?
Cohesion- h2o molecules to stick to one another (water
drops) Adhesion- h2o molecules to stick to other molecules
(water and a solid surface)
Proteins are made by ______________________ monomers.
amino acids
Lipids are made by ___________________ monomers.
glycerol backbone, fatty acids
Carbohydrates are made from ________________ monomers.
monosaccharides
Nucleic acids are made from _________________ monomers.
nucleotides
Dehydration vs hydrolysis reactions
1) Dehydration reactions link monomers together into polymers by releasing water
2) Hydrolysis breaks polymers into monomers using a water molecule.
